whose, of whom, of which: em cujo testemunho falei / in witness whereof I spoke: o homem cujo livro perdi / the man whose book I lost: Pedro, de cuja casa eu venho / Peter, from whose house I come.
whose, of whom, of which: em cujo testemunho falei / in witness whereof I spoke: o homem cujo livro perdi / the man whose book I lost: Pedro, de cuja casa eu venho / Peter, from whose house I come.